Farview, seems you have nothing to lose if you tell this numb nut exactly what you think.But I would still try a little diplomacy. I would print out a copy of your local canine councils breeders rules and regs and give those to her. Tell her the rules are put in place to protect bitches from being over bred.
Then I would tell her that she as at real risk of the next pregnancy ending with a ruptured womb which would mean that the dog would have to have a major op and the possability of not surviving at all. The cost of such an operation , barring complications, would be upward of $2,000.
Border River Pet Resort